This double-walled stainless steel insulated bottle Thermobinkie keeps beverages warm for at least 6 hours and cold for at least 12 hours. Thermobinkie has a modern design, just like the Ketelbinkie. Thanks to the convenient button on the twist cap, you can pour through the cap on the bottle. Heat or cool the inner bottle with a bit of hot or cold water before use. Do not use the insulated bottle for ice cubes, as the cubes may melt together and can no longer be removed from the bottle. You can keep cold beverages extra cold by adding a few ice cubes. Do not store milk products longer than two hours in view of the growth of bacteria. Do not keep warm baby formula in the bottle either. Do not use the bottle for carbonated beverages, as they will spurt out upon opening. Maintenance tips for the inner bottle: Rinse with warm water and a bit of washing liquid. Rinse well with warm water. Remove any lime scale with warm water and a bit of vinegar. Maintenance tips for the outer bottle: Never clean the bottle in the dishwasher. Do not submerge the twist cap.